One of the proposed scenarios for the origin of life is the primordial RNA world, which considers that RNA molecules were likely responsible for the storage of genetic information and the catalysis of biochemical reactions in primitive cells, before the advent of proteins and DNA. In the last decade, experiments in the field of prebiotic chemistry have shown that RNA nucleotides can be synthesized from relatively simple molecular precursors, most of which have been found in space. An important exception is hydroxylamine, NH 2 OH, which, despite several observational attempts, it has not been detected in space yet. Here we present the first detection of NH 2 OH in the interstellar medium toward the quiescent molecular cloud G+0.693-0.027 located in the Galactic Center. We have targeted the three groups of transitions from the J = 2−1, 3−2, and 4−3 rotational lines, detecting five transitions that are unblended or only slightly blended. The derived molecul...

中文翻译：

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原始RNA世界在空间中的益生元前体：NH 2 OH的检测

提出的有关生命起源的方案之一是原始RNA世界，它认为在蛋白质和DNA出现之前，RNA分子很可能负责遗传信息的存储以及原始细胞中生化反应的催化作用。在最近的十年中，益生元化学领域的实验表明，可以从相对简单的分子前体合成RNA核苷酸，其中大多数是在太空中发现的。一个重要的例外是羟胺NH 2 OH，尽管进行了几次观察尝试，但尚未在太空中发现它。在这里，我们介绍了星际介质中朝向位于银河系中心的静态分子云G + 0.693-0.027的NH 2 OH的首次检测。我们已针对从J = 2-1、3-2，和4-3旋转线，可检测到未混合或仅轻微混合的五个过渡。衍生的分子...